CN114622320B - Drawing hot roller assembly, polyamide 66 fine denier yarn drawing system and production process - Google Patents
Drawing hot roller assembly, polyamide 66 fine denier yarn drawing system and production process Download PDFInfo
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- CN114622320B CN114622320B CN202210281504.XA CN202210281504A CN114622320B CN 114622320 B CN114622320 B CN 114622320B CN 202210281504 A CN202210281504 A CN 202210281504A CN 114622320 B CN114622320 B CN 114622320B
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- 229920002302 Nylon 6,6 Polymers 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000003746 surface roughness Effects 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 15
- 235000019198 oils Nutrition 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 11
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 238000009987 spinning Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000004753 textile Substances 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/224—Selection or control of the temperature during stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/225—Mechanical characteristics of stretching apparatus
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/10—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material
- D06B1/14—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by contact with a member carrying the treating material with a roller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention belongs to the textile industry new material technical field. The drafting hot roller assembly comprises a first pair of roller sets, a second pair of roller sets, a third pair of roller sets and a fourth pair of roller sets, wherein the first pair of roller sets are mirror-surface rollers, the surface roughness Ra value of the second pair of roller sets is 2.0-2.8 micrometers, the surface roughness Ra value of the third pair of roller sets is 2.0-2.8 micrometers, the surface roughness Ra value of the fourth pair of roller sets is 1.8-2.5 micrometers, and heating units are arranged in each pair of roller sets; the first pair of roller sets, the second pair of roller sets, the third pair of roller sets and the fourth pair of roller sets are sequentially arranged along the fiber traveling direction. The application also discloses a polyamide 66 fine denier yarn drafting system and a polyamide 66 fine denier yarn production process. The production device has reasonable structural design, can meet the production requirement of the polyamide 66 fine denier yarn, and has low reconstruction and assembly cost of the whole process equipment.
Description
Technical Field
The invention belongs to the technical field of new materials in textile industry, and particularly relates to a drafting hot roller assembly, a polyamide 66 fine denier yarn drafting system and a production process.
Background
The polyamide 66 fine denier yarn is used in sewing thread, industrial water cloth, demolding cloth, high grade fabric, military fixture, etc. and has the features of high strength, light weight, friction resistance, high dyeing performance, high heat resistance, etc.
The prior art CN208266318U polyester fine denier industrial yarn drafting winding machine discloses a polyester fine denier industrial yarn drafting winding machine, comprising: the device comprises an oil wheel, a pre-net device, a yarn guide component, a feeding drafting roller set, a first drafting hot roller, a second drafting hot roller, a fifth drafting hot roller, a final net device and a winding head which are sequentially arranged along the moving direction of a yarn bundle, wherein a first drafting soaking device is further arranged between the first drafting hot roller and the second drafting hot roller, and a second drafting soaking device is further arranged between the second drafting hot roller and the fifth drafting hot roller. It cannot be applied to polyamide 66 fine denier filaments and cannot meet the production requirements of polyamide 66 fine denier filaments.
The existing equipment on the market at present mainly comprises a drafting hot roller assembly for polyester heavy denier industrial yarns, polyester fine denier industrial yarns and polyamide 66 heavy denier industrial yarns, and is not mature in the aspect of polyamide 66 fine denier yarns. The polyamide 66 fine denier yarn (100-1000 denier) is produced, and the requirements of high strength, high elongation at break, good physical property uniformity and the like are met.
Disclosure of Invention
The invention aims to solve the problems and the defects, and provides a drafting hot roller assembly, a polyamide 66 fine denier yarn drafting system and a production process, wherein the drafting hot roller assembly is reasonable in structure and process arrangement, can meet the production requirements of polyamide 66 fine denier yarns, and is low in reconstruction and assembly costs of whole process equipment.
In order to achieve the above purpose, the technical scheme adopted is as follows:
a draft heat roll assembly comprising:
the first pair of roller sets comprises a first left roller and a first right roller, the first left roller and the first right roller are mirror-surface rollers, and a first heating unit is arranged in each of the first left roller and the first right roller;
the second pair of roller sets comprises a second left roller and a second right roller, the surface roughness Ra value of the second left roller and the second right roller is 2.0-2.8 micrometers, and a second heating unit is arranged in each of the second left roller and the second right roller;
the third pair of roller sets comprises a third left roller and a third right roller, the surface roughness Ra value of the third left roller and the third right roller is 2.0-2.8 micrometers, and a third heating unit is arranged in each of the third left roller and the third right roller; and
the fourth pair of roller sets comprises a fourth left roller and a fourth right roller, the surface roughness Ra value of the fourth left roller and the fourth right roller is 1.8-2.5 micrometers, and a fourth heating unit is arranged in each of the fourth left roller and the fourth right roller;
the first pair of roller sets, the second pair of roller sets, the third pair of roller sets and the fourth pair of roller sets are sequentially arranged along the fiber travelling direction.
According to the draft heat roller assembly of the present invention, preferably, the outer wall surfaces of the second pair of roller sets, the third pair of roller sets and the fourth pair of roller sets are pear-shaped.
According to the draft heat roller assembly of the present invention, preferably, the surface roughness profile arithmetic mean deviation Ra value of the first pair of roller sets is 0.01 to 0.05 μm.
According to the draft heat roller assembly of the present invention, preferably, the first pair of roller sets has a length of 150 to 200mm, the second and third pairs of roller sets each have a length of 200 to 250mm, and the fourth pair of roller sets has a length of 300 to 350mm.
A polyamide 66 fine denier yarn drawing system comprises an oiling wheel, a wire guide roller, a drawing hot roller assembly and a network device which are sequentially arranged along the fiber travelling direction.
According to the polyamide 66 fine denier yarn drawing system, preferably, the number of the oiling wheels is two, an oil equalizer is arranged between the oiling wheels and the wire guide roller, a wire guide device is arranged between the drawing hot roller assembly and the network device, and the wire guide roller comprises a free roller for adjusting the trend of fibers and a feeding roller for guiding the fibers to enter the drawing hot roller assembly.
The polyamide 66 fine denier yarn production process utilizes the polyamide 66 fine denier yarn drafting system to produce polyamide 66 fine denier yarn, and specifically comprises the following steps:
coating spinning auxiliary agent on the fiber formed by cooling the oiling wheel set;
the fiber is fed into a drafting hot roller assembly through a wire roller, and drafting and shaping are completed in the drafting hot roller assembly;
false twisting is carried out on the drawn and shaped fiber through a network device;
is conveyed to a winder and spun into polyamide 66 fine denier filaments.
According to the production process of the polyamide 66 fine denier yarn, preferably, the spinning auxiliary agent is a polyol vegetable oil water-soluble oily auxiliary agent, after the cooling forming fiber is coated with the spinning auxiliary agent, compressed air is introduced into a ceramic oil homogenizer with a micropore structure to sweep the fiber, and the air pressure of the compressed air is 0.03-0.08Mpa.
According to the polyamide 66 fine denier yarn production process of the invention, preferably, in the drawing and shaping process of the fiber, the heating temperature of the first pair of roller sets is 60-80 ℃, and the heating mode is single-section coil heating; the heating temperature of the second pair of roller sets is 150-200 ℃, and the heating mode is double-section coil heating; the heating temperature of the third pair of roller sets is 200-250 ℃, and the heating mode is double-section coil heating; the heating temperature of the fourth pair of roller sets is 200-250 ℃, and the heating mode is four-section coil heating;
the first pair of roller sets, the second pair of roller sets and the third pair of roller sets adopt different speed differences to carry out fiber drafting, and the drafting multiple is 4.0-7.0 times; the third pair of roller sets and the fourth pair of roller sets are shaped by adopting different speed differences, and the shaping multiple is 0.8-1.0 times.
According to the polyamide 66 fine denier yarn production process of the invention, preferably, the rotation speed of the oiling wheel is 10-20 revolutions per minute, and the air pressure of the compressed air introduced into the network device is 2.0-5.0Mpa.
By adopting the technical scheme, the beneficial effects are that:
the polyamide 66 fine denier yarn produced by the invention can meet the requirements of high strength, high elongation at break, good uniformity of physical properties and the like, and the properties reach the international advanced level, thus obtaining high acceptance of customers in industries such as sewing threads, water cloth, release cloth and the like.
The equipment system disclosed by the invention is relatively simple to process, can be split into a plurality of different parts, is provided with mature production equipment, can be obtained through mechanical processing production and external purchasing, has better economy, and can be popularized and used on a large scale.
The method aims at the characteristics of the polyamide 66 fine denier yarn, designs and corrects the process steps and process parameters, can meet the production process characteristics, and compared with the existing other equipment and processes, the method can further optimize the fiber treatment process according to the characteristics, particularly in the drawing and shaping processes, can ensure that the self characteristics of the fiber are not affected, and improves the physical characteristics of the fiber after drawing and shaping.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. Wherein the showings are for the purpose of illustrating some embodiments of the invention only and not for the purpose of limiting the same.
Fig. 1 is a schematic diagram of a polyamide 66 fine denier yarn drawing system in accordance with an embodiment of the present invention.
Number in the figure:
110 is an oil feeding wheel, 120 is an oil homogenizing device;
210 is a free roller and 220 is a feed roller;
311 is a first left roller, 312 is a first right roller, 321 is a second left roller, 322 is a second right roller, 331 is a third left roller, 332 is a third right roller, 341 is a fourth left roller, 342 is a fourth right roller;
400 is a guidewire device;
500 is a network device;
600 is a winder;
700 is a fiber.
Detailed Description
An exemplary embodiment of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art.
In the description of the present invention, it should be understood that the expressions "first" and "second" are used to describe various elements of the present invention and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that there may be intervening elements present therebetween; i.e. the positional relationship of direct connection and indirect connection is covered.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items.
It should be noted that terms like "upper," "lower," "left," "right," and the like, which indicate an orientation or a positional relationship, are merely used to indicate a relative positional relationship, and are provided for convenience in describing the present invention, and do not necessarily refer to devices or elements having a particular orientation, being constructed and operated in a particular orientation; when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
Referring to fig. 1, the application discloses a draft heat roller assembly, including first pair of roller group, second pair of roller group, third pair of roller group and fourth pair of roller group, first pair of roller group, second pair of roller group, third pair of roller group and fourth pair of roller group are arranged in proper order along the fibre advancing direction.
The following is a specific description of four pairs of roller groups:
the first pair of roller sets in this embodiment includes a first left roller 311 and a first right roller 312, the first left roller 311 and the first right roller 312 are mirror rollers, and a first heating unit is provided in each of the first left roller 311 and the first right roller 312; the arithmetic mean deviation Ra value of the surface roughness profile of the first pair of roller sets is 0.01-0.05 microns, and the length of the first pair of roller sets is 150-200mm.
The second pair of roller sets includes a second left roller 321 and a second right roller 322, the surface roughness Ra value of the second left roller 321 and the second right roller 322 is 2.0-2.8 micrometers, and a second heating unit is arranged in each of the second left roller 321 and the second right roller 322; the third pair of rollers includes a third left roller 331 and a third right roller 332, the surface roughness Ra value of the third left roller 331 and the third right roller 332 is 2.0-2.8 micrometers, and a third heating unit is provided in each of the third left roller 331 and the third right roller 332; the outer wall surfaces of the second pair of roller sets and the third pair of roller sets are pear-shaped, and the lengths of the second pair of roller sets and the third pair of roller sets are 200-250mm.
The fourth pair of rollers includes a fourth left roller 341 and a fourth right roller 342, the surface roughness Ra value of the fourth left roller 341 and the fourth right roller 342 is 1.8-2.5 micrometers, and a fourth heating unit is provided in each of the fourth left roller 341 and the fourth right roller 342; the outer wall surface of the fourth pair of roller sets is pear-shaped, and the length of the fourth pair of roller sets is 300-350mm.
The application also discloses a polyamide 66 fine denier yarn drawing system comprising a tanker 110, a wire guide roller, a drawing heat roller assembly as described above and a network 500 arranged in sequence along the fiber travel direction. The number of the oil applying wheels 110 in the structure is two, the oil equalizer 120 is arranged between the oil applying wheels 110 and the wire guiding rollers, the wire guiding device 400 is arranged between the drafting hot roller assembly and the network device 500, and the wire guiding rollers comprise free rollers 210 for adjusting the trend of the fibers and feeding rollers 220 for guiding the fibers to enter the drafting hot roller assembly.
The application also discloses a production process of the polyamide 66 fine denier yarn, the polyamide 66 fine denier yarn production method by using the polyamide 66 fine denier yarn drawing system specifically comprises the following steps:
the spinning auxiliary agent is a polyol vegetable oil water-soluble oily auxiliary agent, and after the spinning auxiliary agent is coated on the cooled and molded fiber, the ceramic oil homogenizer with a micropore structure is used for homogenizing oil, and compressed air with certain pressure is introduced into the oil homogenizer to generate slight network degree, so that an oil film is more uniform, and oiling and homogenizing the fiber are realized;
the fiber 700 is fed into the drafting hot roller assembly through the wire roller, the drafting and shaping are completed in the drafting hot roller assembly, the fiber is enabled to be close to vitrification through the first pair of roller sets, the second pair of roller sets and the third pair of roller sets are completed to draft and stretch, and the fourth pair of roller sets are completed to shape and relax.
False twisting the drawn and shaped fiber 700 by a network device 500, which blows compressed air to the fiber to false twist and generate irregular interlacing;
to a winder 600, spun into polyamide 66 fine denier filaments.
The linear density range of the polyamide 66 fine denier yarn produced by the invention is 100-1000dtex, the linear density variation coefficient is less than or equal to 1.5%, the breaking strength is more than or equal to 8.0cN/dtex, the breaking strength variation coefficient is less than or equal to 3.0%, the breaking elongation is 20.0-26.0%, the breaking elongation variation coefficient is less than or equal to 6.0%, and the dry heat shrinkage is 3.0-5.0%.
In the process, the process parameters are set as follows in the production process of the polyamide 66 fine denier yarn:
the rotational speed of the oil feeding wheel 110 is 10-20 revolutions per minute, and the air pressure of the compressed air introduced into the oil homogenizer 120 is 0.03-0.08Mpa; in the working procedures of drawing and shaping the fiber, the heating temperature of the first pair of roller sets is 60-80 ℃, and the heating mode is single-section coil heating; the heating temperature of the second pair of roller sets is 150-200 ℃, and the heating mode is double-section coil heating; the heating temperature of the third pair of roller sets is 200-250 ℃, and the heating mode is double-section coil heating; the heating temperature of the fourth pair of roller sets is 200-250 ℃, and the heating mode is four-section coil heating; the first pair of roller sets, the second pair of roller sets and the third pair of roller sets adopt different speed differences to carry out fiber drafting, and the drafting multiple is 4.0-7.0 times; the third pair of roller sets and the fourth pair of roller sets are shaped by adopting different speed differences, and the shaping multiple is 0.8-1.0 times. The air pressure of the compressed air introduced into the network device is 2.0-5.0Mpa.
Through detection, the polyamide 66 fine denier yarn 470dtex produced by the equipment has the linear density variation coefficient of 0.9 percent and the breaking strength of 8.5cN/dtex, the breaking strength variation coefficient is 2.8%, the breaking elongation is 22.5%, the breaking elongation variation coefficient is 5.2%, and the dry heat shrinkage is 4.0%.
Preferred embodiments for carrying out the invention have been described in detail hereinabove, but it should be understood that these embodiments are merely illustrative and are not intended to limit the scope, applicability or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications and variations of the foregoing embodiments will be apparent to those of ordinary skill in the art in light of the teachings of this invention, which will fall within the scope of this invention.
Claims (9)
1. The polyamide 66 fine denier yarn drafting system is characterized by comprising an oiling wheel, a wire guide roller, a drafting heat roller assembly and a network device which are sequentially arranged along the fiber travelling direction;
drawing hot roller subassembly, its characterized in that includes:
the first pair of roller sets comprises a first left roller and a first right roller, the first left roller and the first right roller are mirror-surface rollers, and a first heating unit is arranged in each of the first left roller and the first right roller;
the second pair of roller sets comprises a second left roller and a second right roller, the surface roughness Ra value of the second left roller and the second right roller is 2.0-2.8 micrometers, and a second heating unit is arranged in each of the second left roller and the second right roller;
the third pair of roller sets comprises a third left roller and a third right roller, the surface roughness Ra value of the third left roller and the third right roller is 2.0-2.8 micrometers, and a third heating unit is arranged in each of the third left roller and the third right roller; and
the fourth pair of roller sets comprises a fourth left roller and a fourth right roller, the surface roughness Ra value of the fourth left roller and the fourth right roller is 1.8-2.5 micrometers, and a fourth heating unit is arranged in each of the fourth left roller and the fourth right roller;
the first pair of roller sets, the second pair of roller sets, the third pair of roller sets and the fourth pair of roller sets are sequentially arranged along the fiber travelling direction.
2. The polyamide 66 fine denier yarn drawing system as claimed in claim 1 wherein said upper tanker is two, said upper tanker and said wire guide roller are arranged with a homogenizer, said drawing heat roller assembly and said network are arranged with a wire guide, said wire guide roller comprises a free roller for adjusting fiber trend and a feed roller for guiding fiber into said drawing heat roller assembly.
3. The polyamide 66 fine denier yarn drawing system as claimed in claim 1 wherein the outer wall surfaces of said second, third and fourth pairs of rolls are pear-shaped.
4. The polyamide 66 fine filament drawing system of claim 1 wherein said first pair of roller sets has a surface roughness profile arithmetic mean deviation Ra value of from 0.01 to 0.05 microns.
5. The polyamide 66 filament drawing system of claim 1 wherein said first pair of roller sets has a length of 150-200mm, said second and third pairs of roller sets each have a length of 200-250mm, and said fourth pair of roller sets has a length of 300-350mm.
6. A process for producing polyamide 66 fine denier yarn, characterized in that the polyamide 66 fine denier yarn is produced by the polyamide 66 fine denier yarn drawing system according to any of claims 1-5, comprising the following steps:
coating spinning auxiliary agent on the fiber formed by cooling the oiling wheel set;
the fiber is fed into a drafting hot roller assembly through a wire roller, and drafting and shaping are completed in the drafting hot roller assembly;
false twisting is carried out on the drawn and shaped fiber through a network device;
is conveyed to a winder and spun into polyamide 66 fine denier filaments.
7. The process for producing polyamide 66 fine denier yarn as claimed in claim 6, wherein the spinning aid is a polyol vegetable oil water-soluble oily aid, and after the cooled and molded fiber is coated with the spinning aid, compressed air is introduced into a ceramic oil homogenizer with a micropore structure to sweep the fiber, and the air pressure of the compressed air is 0.03-0.08Mpa.
8. The process for producing polyamide 66 fine denier yarn as claimed in claim 6, wherein in the drawing and shaping process of the fiber, the first pair of rolls is heated at 60-80 ℃ by single-stage coil heating; the heating temperature of the second pair of roller sets is 150-200 ℃, and the heating mode is double-section coil heating; the heating temperature of the third pair of roller sets is 200-250 ℃, and the heating mode is double-section coil heating; the heating temperature of the fourth pair of roller sets is 200-250 ℃, and the heating mode is four-section coil heating;
the first pair of roller sets, the second pair of roller sets and the third pair of roller sets adopt different speed differences to carry out fiber drafting, and the drafting multiple is 4.0-7.0 times; the third pair of roller sets and the fourth pair of roller sets are shaped by adopting different speed differences, and the shaping multiple is 0.8-1.0 times.
9. The process for producing polyamide 66 fine denier yarn as claimed in any of claims 6-8, wherein the rotational speed of said tanker is 10-20 rpm, and the pressure of compressed air introduced into said network device is 2.0-5.0Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281504.XA CN114622320B (en) | 2022-03-22 | 2022-03-22 | Drawing hot roller assembly, polyamide 66 fine denier yarn drawing system and production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281504.XA CN114622320B (en) | 2022-03-22 | 2022-03-22 | Drawing hot roller assembly, polyamide 66 fine denier yarn drawing system and production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114622320A CN114622320A (en) | 2022-06-14 |
| CN114622320B true CN114622320B (en) | 2023-05-12 |
Family
ID=81904464
Family Applications (1)
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